Table 2 Between-group comparisons of physical fitness items and physical fitness index among Tajik adolescents with different waist circumference ratings in the Pamir Plateau, Xinjiang, China (M ± SD, boys)
Project | Age(yrs) | WC < 25th Percentile(A) | 25th ≤ WC <50th Percentile(B) | 50th ≤ WC <75th Percentile(C) | WC ≥ 75th Percentile(D) | Effect Size (r) ‡ | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | Mean ± SD | N | Mean ± SD | N | Mean ± SD | N | Mean ± SD | A/B | A/C | A/D | B/C | B/D | C/D | ||
Grip strength | 13yrs | 72 | 21.38 ± 4.61 | 85 | 25.49 ± 6.53 | 39 | 26.13 ± 7.68 | 52 | 28.97 ± 7.18 | 0.3# | 0.4# | 0.5# | 0.0 | 0.2# | 0.2# |
14yrs | 53 | 26.28 ± 6.57 | 65 | 29.53 ± 7.79 | 100 | 31.47 ± 7.71 | 78 | 33.59 ± 7.50 | 0.2# | 0.3# | 0.5# | 0.1 | 0.3# | 0.1 | |
15yrs | 38 | 29.68 ± 6.23 | 54 | 32.44 ± 6.49 | 112 | 35.51 ± 8.42 | 89 | 37.13 ± 9.06 | 0.2# | 0.4# | 0.4# | 0.2# | 0.3# | 0.1 | |
13-15yrs | 163 | 24.91 ± 6.60 | 204 | 28.62 ± 7.49 | 251 | 32.44 ± 8.65 | 219 | 33.94 ± 8.67 | 0.3# | 0.4# | 0.5# | 0.2# | 0.3# | 0.1 | |
Standing long jump | 13yrs | 72 | 169.00 ± 21.48 | 85 | 181.39 ± 21.76 | 39 | 180.15 ± 26.09 | 52 | 154.02 ± 23.64 | 0.3# | 0.2# | 0.3# | 0.0 | 0.5# | 0.5# |
14yrs | 53 | 180.55 ± 20.62 | 65 | 192.62 ± 23.94 | 100 | 197.96 ± 25.92 | 78 | 169.58 ± 23.00 | 0.3# | 0.3# | 0.2# | 0.1 | 0.4# | 0.5# | |
15yrs | 38 | 193.68 ± 26.76 | 54 | 195.8 ± 28.47 | 112 | 210.51 ± 21.44 | 89 | 183.39 ± 25.01 | 0.0 | 0.3# | 0.2# | 0.3# | 0.2# | 0.5# | |
13-15yrs | 163 | 178.51 ± 24.45 | 204 | 188.78 ± 25.08 | 251 | 200.79 ± 26.18 | 219 | 171.50 ± 26.50 | 0.2# | 0.4# | 0.1 | 0.2# | 0.3# | 0.5# | |
50 m dash | 13yrs | 72 | 8.69 ± 0.92 | 85 | 8.66 ± 0.77 | 39 | 8.72 ± 1.03 | 52 | 10.83 ± 0.94 | 0.0 | 0.0 | 0.8# | 0.0 | 0.8# | 0.7# |
14yrs | 53 | 8.52 ± 0.87 | 65 | 8.41 ± 0.91 | 100 | 8.15 ± 0.81 | 78 | 10.47 ± 0.86 | 0.1 | 0.2# | 0.7# | 0.1 | 0.8# | 0.8# | |
15yrs | 38 | 8.20 ± 1.02 | 54 | 8.13 ± 0.95 | 112 | 7.92 ± 0.83 | 89 | 10.36 ± 1.08 | 0.0 | 0.1 | 0.7# | 0.1 | 0.7# | 0.8# | |
13-15yrs | 163 | 8.52 ± 0.94 | 204 | 8.44 ± 0.89 | 251 | 8.14 ± 0.90 | 219 | 10.51 ± 0.99 | 0.0 | 0.2# | 0.7# | 0.2# | 0.7# | 0.8# | |
Endurance run | 13yrs | 72 | 308.07 ± 38.95 | 85 | 289.25 ± 46.81 | 39 | 308.78 ± 43.69 | 52 | 376.71 ± 45.47 | 0.2# | 0.0 | 0.6# | 0.2# | 0.7# | 0.6# |
14yrs | 53 | 293.02 ± 38.18 | 65 | 284.38 ± 40.62 | 100 | 269.85 ± 36.34 | 78 | 358.57 ± 49.57 | 0.1 | 0.3# | 0.6# | 0.2# | 0.6# | 0.7# | |
15yrs | 38 | 278.00 ± 36.75 | 54 | 264.74 ± 32.57 | 112 | 261.05 ± 39.76 | 89 | 340.58 ± 45.58 | 0.2# | 0.2# | 0.6# | 0.1 | 0.7# | 0.7# | |
13-15yrs | 163 | 296.17 ± 39.81 | 204 | 281.21 ± 42.50 | 251 | 271.98 ± 42.21 | 219 | 355.57 ± 48.91 | 0.2# | 0.3# | 0.6# | 0.1 | 0.6# | 0.7# | |
PFI | 13yrs | 72 | -1.96 ± 2.35 | 85 | -0.49 ± 2.55 | 39 | -0.93 ± 3.16 | 52 | -5.18 ± 2.92 | 0.3# | 0.2# | 0.5# | 0.1 | 0.7# | 0.6# |
14yrs | 53 | -2.29 ± 2.51 | 65 | -1.10 ± 2.69 | 100 | -0.01 ± 2.77 | 78 | -5.35 ± 3.02 | 0.2# | 0.4# | 0.5# | 0.2# | 0.6# | 0.7# | |
15yrs | 38 | -2.29 ± 2.14 | 54 | -1.42 ± 2.83 | 112 | -0.11 ± 2.91 | 89 | -5.99 ± 3.29 | 0.2# | 0.4# | 0.6# | 0.2# | 0.6# | 0.7# | |
13-15yrs | 163 | -2.14 ± 2.35 | 204 | -0.93 ± 2.68 | 251 | -0.20 ± 2.90 | 219 | -5.57 ± 3.12 | 0.2# | 0.3# | 0.5# | 0.1 | 0.6# | 0.7# | |